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Building Scalable Backend APIs with Node.js

Published on August 8, 2026

Building an API that works locally is easy. Building one that remains reliable as traffic grows requires much more thought.

In this article, I explore some important backend concepts including:

  • REST API design
  • Authentication and authorization
  • Database indexing
  • Caching with Redis
  • Error handling
  • Logging and monitoring
  • Horizontal scaling

A good backend is not only about writing endpoints. It is about designing a system that is reliable,